Telephone-exchange system.



E. E. CLEMENT.

TELEPHONE EXCHANGE SYSTEM.

APPLICATION FILED APR.23, 190B.

' Patenti-ad july tf, ii fila-lk Mgg@ l E. E. CLEMENT.`

TELEPHONE EXCHANGE SYSTEM. APPLIUATION FILED mms3, um.

Patiented July 28, i914.

E.' E'. CLEMENT.

TELEPHONE EXCHANGE SYSTEM.

APPLIUALloN FILED Mmm, 1908.

"tmf

[DE MENT.

L EPH() NT Patent 1rd; July 28, 1,9141.

E. E. CLEMENT. TELEPHONE EXCHANGE SYSTEM.

APYLIUATION FILED Mum, um.

l, l 05,4%90. Patented July 28, 1914.

m27 MWMJ E. B. CLEMENT. TELEPHONE EXCHANGE SYSTEM.

APPLloATIoN Umm APu.2s,19oa.

l) l 05,6319@ Patented July 28, 1914.

@nm/nica @v tu @was L. E. CLEMENT. TELEPHONE EXCHANGE SYSTEM. APBLIUM'ION rlLnD Amma, wou.

l, l (M490. Patented July 28, 1914.

14 SHEETS-SHEET '1.

@Ua h1 eases E. E. CLEMENT. TELEPHONE EXCHANGE SYSTEM.

APPLICATION FILED APILZB, 1008.

Patented July 2s, 1914.

wir" as Lt E. CLEMENT.

TELEPHONE EXCHANGE SYSTEM.

APPLIUATIUN11Ln1 APn.na,19oa.

Patented July 28, 1914.

14 SHEETS-SHEET 9.

NNN

E. E. CLEMENT.

TELEPHONE EXCHANGE SYSTEM.

APPLIUATION FILED APILQG, 1908.

Patented July 28, 1914.

14 SHEBTS"BHBBT 10.

E. E. CLEMENT.

TELEPHONE EXCHANGE SYSTEM.

APPLIGAioN 11mm Amma. 190BA Patanted July 28, 1914.

LOAQQ 14 SHEETS-'SHEET ll.

E. E. CLEMENT.

TELEPHONE EXCHANGE SYSTEM.

APPLIUATION FILED APRJZS, 19013.

Patented July 28, 1914,

14 SHEETS SHEET l2.

E. E. CLEMENT. TELEPHONE EXCHANGE SYSTEM.

APPLICATION FILED APR.2R,1908.

Patented July 28, 19M` MWACQO.

14 SHEETSMSHEET 13.

www f, J

E. E. CLEMENT. TELEPHONE EXCHANGE SYSTEM. APPLICATION FILED APR.23,1908.

Ll 05,490, patented July 28, 1914.

14 SHBETS-S1BET 14.

- lu lviu N11 l I v Y SMM l naamw f gminil :wz will niml i l l l circuits, nn h loro traumi, will ln unuh` from thinl poinl/ lao ,ground in mnillirwlion lhrough tho vomlnfwr illu, :n'nmluro lrl,

cmulurflfn' :Jiu um! illu? lmnp lif :nul in tho (lirelvlion lo 5i-ouml through llu` uluhzh not On.. llnf vlnzrfh niugl'nul' nnrl ffl; lump g roinmrflml in {mrullvl liriinnchofs. (firoults boing as trucelfl, tho hitch nuignol: will he onergizml and` attracting the levvr la,

will (lisengagc the clutch :newborn thvrnhy (liwonmicting the switch spindle sfr, from i driving nien-us whrrnupnn lh@ switnh will stop. Tho cut-oil" rolay N boingq ulm onor' fixed `will uttrur". itis nrnmturl: when] ownit indy ho trzu'efd from ihn lino` conductor la, through thrnrnuiture /flm fx'lvnsion Hu, von tact (3H. nipor lin.. fxlxfnsion Iliff :nul urrnuburo Qr'ff lo liunle uomini-lor lmbuml from snhsorilim-B` line wirr; :lll lhroug'l'i urinuluiu om, lim` vxtQnf-aion Sm, contact 7a. Wipor 'l2/l extension lla und nrumuru ra, to Lruuk Conductor 1%. lil `vill now he nppnrmu'` lihnl; thv sulisifrihfffr; instrument is 'rounol'lol'l with the trunk comlurtors :nul flint the ofmn'tor hns hofn upprisoil oi' .wuvh (-ounm lpiou h r thv hlingj oli lha: lmnp lill h v rvu-- :nin ol' tho viruuil ihiouggh il :1+ hol'oru imoll. lt will :liso ln soon *ghail wlwn ilul muy lilo li'unlf umullulorri 1.7M unil lkw nonyj` tho ronilul'loiii illu uml iiw Whirl: mw hmm lwl'oz'ae .rvlurrml lu. l'hu opeizsor -:iu;; non` in zourcrsulioml foinnniuirzllion willi [iw suhulrihvivan Lun-orfani llic nurnher olf the mnh-Ll fnlhsurilnr null. having no nnpli lmd Lhis. bho lroy Kr: is (lopr rl. in lfho nin-ml posniions ol lln lny thv trunk onllwlors .ITU uml ll# nro ixuxfpollirvly conuwl'ell with tho ofilviifiihur; lll und lll through lln oonuvlnl il Bill/il, Ilflo null 353m. when thin lio); in lllprw nl lh@ minluots uro. sopuruh-wl im :u lio (lisioniua-fl the roiuluololxs .17a :nifl lhu from the ,ouluvtoru .ll :nul 10, whilo lli@ uonduolrn'u 254.30, nml 37u. loznling: lo tho impulse pgonrlinl; mmhino uml whirl) nro .i )eL-lively lzouiurctoil to the oontnc'ts 3W and 35M uro connectell with the crfvnlluffloru lllaynml 20@ hy r vison of the con tr-,olss Illa nml :3Q/f voninnf info engugolncnt with ho #nul/ucla Ill'ln nml 31m izfqpolretiwl 'l'ho fhfinlrinioni of llw lirajfllfu also Gunmen tho miglior-filoni ol thu mutants lll/f und im ihm-@hy oonnvrliugr tho lmliluui/ Niro Ilm with he oonduvlor fzln, which loullfi to one loriuinnl of the rolay lm tho olhoi: lornlinul oli that rvlzly heing grounded. l'his results in the onvrgizul ion of thu relay lust referred lo, whom-upon ih: nrnmturcs urn ulLLructcrL rho :nnmtui'o wir: lfonnocling one (Grulin-1l olE ills rolny will: Lhrr hnlzlory conncrml. wiro 126.. n lufrvnpon lhu vounon'iou through that. rrlui' is lovhml, living." vonlrolhrd hy the rw Vw. 'lho ulti-nuthin ol rho nruurlure l, 'f/ hwnk llw vin-uil of lfhf: lmnp La. '.iln: winnw'lion nl' Lhu Howling: nnufhino with tho .pluim-for U15 :nul 106 huvingheon mudo :is lwrrihl-,fh lh(l .-pmulloinsnha thv 'push huttom ol` th;A uhh: l'l'lf, .lyfn7 olif., to collespomjl to ihn ulnnhrr of tho u'unfoll suhsoriliior mul hun :u'luzltw: tho hmullo llo whormipon tho i1u| ul.; f ,"nro tnnsniiflcll to thc conduct-ors 105 mul 10C rcsl'iovtivoly and thence to the nul'oluutin ilrowgr Imvitvlws, ull als horllin- :rlilll' losr-rihofh `lu inorinlr tho handle llrz from ils inilinl posiion romluflzors lila :unl lill/ uhh-h uw norinnlly hvlfl npnll, hy that hunrlli, urlf pcrinitlfull lo como logothol :is is their constant tondwwy. (Inn ol" thongY vor lhutors is vonnm'lell` through tho Conillu-lornl lfm. :nul Alff, will] lilw hulls-ry wim flu whihtho ollun' of Lin-fle roulluvtors is (ronnmfiml hi' lh@ oonllumnr #mi u'iLh onoy terminal of the lmnp .l/ni, the ohvr livriuinnl ol that; lmnp living' fonum'iml lo :e grouulll-:l vonrlm-lor Qlaf. ll, will thu4 hu Shun tzlml no1 my lim inruil through the lmnp L'n, iS; @n nl ha 'new und am but on.

luv

settinp; the handle Ha to transmit signaling; impulses, the circuit of this lemp becomes complete und it is lighted. This condition ecntinnes ii'ntil the sending of the impulses has been nislied und the handle Ho has reH turned to its normal position, when 'the cir cuit ot` the lamp is een in broken. (ll he light ii'ig and the exting.iiehment of this lamp, thereiore, advises the operator of the starb ing' and Stopping of the impulse sending de vice. Upon the completion of the Sending of the impulses, the operator lite the key Ko thereupon disconnecting the contacts 32a enti 34o from the contacts 39a and 38ar respectively, and brings; them into engagement with the contacte 33a. und 35o respectively., thus disconnecting the sending machine end connecting the trunk conductors la and 18a with 'the conductors' 105 and 10G respectively 'from which circuit can he traced through the Strowger switches to the celled sub scriber, es hereinafter described. The litt- ,ingr of the key Ka' also resilts in the separation of the contacts 40o end alle thereby breaking' the battery connection, through those contacts, of the relay Rio; but it Will he remembered that the'hettery' connection of this relay is now formed through the en mature rta. i

The operation of the automatic switches' in the con'inletion of the talking circuit Will he describen in detail in xhe explenetitm of the operation ot :i modified 'forni of the 'operators impulse sending machine the actuel t sn of Jthe switchee heine' accomplished in.

the sinne manner with both et the sending dern For the present we "will nesunie that the completed connections; have been umile. onversetion umy now he carried on between the celled und cullingr subset-iloA ers, and upon the termination ol the conversation :and the hanging up ot the calling suhscril'aer's receiver? the following; opered tions ne nlm-e: 'ihe linngiugg up oi the oeiver breek@ the connection hetween the sub iberls lines lf!4 :and 2o herennon the circuit of the tip relay life is limiten and ite motore is rele l. 'liis opens the :nit of rele [i whien in i reim t sirinnti'nfes ,est named, etlucts two l s1- innlifineouel)'n @ne is; the breakin of the vonnections `between the extensions 13a, end :lo with the trunk lconductors 15o and 16a, respectively whereupon the circuit through thecut-off relay N end the sleeve relay lisa is broken and their nrmeturee are released. The other result referred to is the 'breaking if the 4circuit oi the clutch magnet Url et the zirinetiue ir'o, whereupon the Spring m moves the clutch nienihers into 'engagement and th Y The and i eretor e nient-teo connection ofthe relay lita, whereupon is errnetl'ires are released \"-'lhe denergimtion of th tip relay Rza While; the relay Rte energized, operetesto threw battery ennuiw teneou'ly upon the two sides @if the troni;

Referring to Fig: 2B, there is therein.

shown apparatus similar to that shown in Fig. la hut differing therelironi in some im` portent particulars. r)The eppertus coniprises a subscribers telephone set A', e out-l olii relay ll; e line relay M, e continually ro`- tilting Swich Sa., :i clutch magnet lfo, :i teet relay Re and relays Ra, R2@ liao and Ria,

together with relay armature-S and trunl` und line conductors all es .shown end tiescrihed in connection with Fig. la. -r.lhe apparatus of Fig. 2i" also comprises an iinpulse sending machine comprising e number Wheel l/Va end its actuating handle Ha? sete of push buttons Po, PM, Pao eno-A luc' the short-circuiting tins 82a, ssa, eta and connection with Fig l.n and. which 'was de scribed earlier in the speciicetion. he op- 'telephone set lille is of Well motion.

the epperetue or lig. e

` with the trnnl conductors, consists in e twin plug structure which consieto ot' e, hase er bloei: lb Ain which nre mounted plugs Q?) and Il?) each having; e tip und sleeve insu-- listed from erich other in nei il Uni of these piege' Zo @ervenI to coin" ope-.retiens telephone havin; :ne of dnctors y-l-l) 0i that telephone conne ileI tip while the other ogeretors ne eonzfluctor 5?) is conneeted. with the sleeve. The other plug 37), serves to connect `the iin pulse sending machine, having; one et the conductors Gl) from that innchinef oonneeted with the sleeve of the plug, While the other conductor 7b 4trein the sending niechinc is connected with vthe tip of the plug?, The plugs QZ) and 3?) being mounted es described, ere adapted to be inserted simultaneous@ in their respective jeelis. The jack corregit-2h :nprieee Contact 7 "-,h ef d to enl Pm The lines lie-ing numbered from l' to 100 consecutively, line Number l is miiltipled to the first pair of contacts of the irst tens relay each trunl. Line 2 is niultipledjto the second pair of contacts of the first tens relay in each trunk, line Number 3 to the third pair of contacts of the irsttens relay of each' trunk and so on op to line ll. Line ll being in .the second set of l0 lines, will be multipled to the first pair ocontacts in 'the second tens relay of each trunk. Line 12 will be niultipled to the second pair of contacts in the second tens relay of each trunk and so on. Line 56 being; the sixth line of the fifth set of l0 lilies will be multiplied to the sixth pair of contacts in the fifth tens relay of each trunk. The contacts in the tens relays opposite those inultipled directly to the lines referred to above, are connected directly With contacts in the units relays as follows: rEhe first pair of contacts of each tens relay of a group of 10 associated with a particular trunk is connected 'with the contacts oi the .tirst units relay belonging,`- to thetrunli. rEhe second pair oi contacts of the saine group of relays are all connected to the contacts of the second units relay ,helonging to the trunk, the third to the third relay and so on. The opposite contacteein the units relays of a particular trunk are all connected directly to the tilinlt. ln Figs` 1 3 and 3" the bottom contacts of all the tens and units relays serve to complete locking circuits for their respective relays, These three iigures as has been stated show tl'iree tens relays and title units rei each of three separate trnnlts. ln Fig. 'he tens relays are designated PTR", Pfl-"L -2 and TRS.,

lThe operation of connecting a chllingsubscriber with the trunli'eby means o t pri mary selector relays is` as iiollowszlttle will assume that a subscriber at the station ft2 desires a connection. ceiyer from the hook thereby closing` his line circuit l--a and energizing the line relay l the energizing circuit being from battery B (see Figjf) through 3i 4, M27 6, l, through the subscriberis telephone, 0, T

l ground. rlhe pulling up of the line relay p is battery current onto the magnet i .1i/.if of the distributing switch DS, current flowing' from battery through 3, t?, 9, l0. ilf, interruiiter l and ground. The actuation of the armature ll of the magnet Mel turns the arms l2, 13 and lil of th.D distrilniting switch De through the inediumof the pawl l5 connected tothe armature l-l and the ratchet lo 'of the distributing switch.

s2 and the units lielnOV/S his lie-- moana@ The switches/'ill continue to turn owing to the intermittent current through the interrupter until one of the arms 11, l2 and 13 comes onto a. contact leading to one of the relays TR, TR' and TR2 associated with an idle trunk. Let us assume that this is the relay TR. lWhen the arm l2 comes onto the terminal l? the` relay TR is energized current flowing from hat teiy B (see Fig. 2) through 3, 8, 9, l0T 1.8, 12, 17, 19, TR,'32, continuation of 32 (Fie: 3)", continuation of 32 (Fig. t), Si and ground. lt Will he observed that the selection of the idle trunk depends u'pon the deeneigized condition of the sleeve relay S of the idle trunk and that if the trunk Were in use the armature would he drawn up and henceits associate transfer relay could not be energized. The actu-ation of the transfer relay shunts the magnet Md of the distributing switch Ds and the latter ceases to rotate. The pulling up of the. trunk distributing` relay TR connects battery with the terminals 20? 21. the former beingn through the armature of the line relay lili; conductors 23, 21: and Whilethe latter is core nected through armature 26 of the line relay M2 and conductors 217, 28 and 29. The closinO' of the circuit at 2l energizesfthe units rel-ity PUES. the energizing eircifits et the relay PURfheing from. battery up to 21 as' traced and thence through conductor 30 in Fig-s. f2 and Il; through llla and to ground.

lt will be understood thatl all ofthe :units relays belonging to this group have their circuits partially closed through the closing of the contacts at the relay T3 but 'that the relay PUES is the only one which has its circuit completed by the line relay M2 as has also the proper tens relay to eiiiect the connection of the callingline in ques tion with the idle trunk. At the saine time the tens relay PTFE is enereized the energizing circuit continuing 'from the Contact 2() through cond ctor 3l in F and 3, 34;, PTE? and ground. Both the relays PT 't3 and PURE' therefore pull up and close their respective contacts. The simultaneous closing` of the contacts of the tens relay PTR and of the units reiay connects the extensions and 3G of the line Wires l and Q to the trunk conductors 101 and i022 respecto ly the former connection being traced troni Wire in and 3, through Wire 3i@ contact 39, eonductor t0, el.; 1.22, 1li-3, lOl, and the latter being :troni wire 3G in 2 and 5i, through del, 45., 46, et?, 8, 49, 50, 102. The connections of the trunk lOl and lOQ with. the extensions 35 and 36 of the line wires l and 2 results in the ener- Igif/tation oit the cut-olf relay lil current flow ing; troni battery (See Fig. fr) through S", 523, trunk 102, haelt over the conductor as already taced and to ground through the cutfoilt relay N2. Therenponvt'he fcntl 

